MXB7846 查看數據表（PDF） - Maxim Integrated

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MXB7846

2.375V to 5.25V, 4-Wire Touch-Screen Controller with Internal Reference and Temperature Sensor

Maxim Integrated 

2.375V to 5.25V, 4-Wire Touch-Screen Controller

with Internal Reference and Temperature Sensor

Functional Diagram

VDD

PENIRQ

X+

X-

TEMPERATURE

SENSOR

DOUT

Y+

BUSY

Y-

6-TO-1

MUX

12-BIT ADC

SERIAL

DATA

INTERFACE

PENIRQ

BATTERY

BAT

MONITOR

AUX

DCLK

DIN

CS

2.5V

REF

REFERENCE

Table 1. Input Configuration, Single-Ended Reference Mode (SER/DFR HIGH)

A2

A1 A0

0

0

0

0

0

1

0

1

0

0

1

1

1

0

0

1

0

1

1

1

0

1

1

1

MEASUREMENT

Temp0

Y position

BAT

Z1

Z2

X- position

AUX

Temp1

ADC INPUT CONNECTION

Temp0

X+

BAT

X+

Y-

Y+

AUX

Temp1

DRIVERS ON

—

Y+, Y-

—

X-, Y+

X-, Y+

X-, X+

—

—

Table 2. Input Configuration, Differential Reference Mode (SER/DFR LOW)

A2

A1

A0

ADC +REF

ADC -REF

ADC INPUT

MEASUREMENT

CONNECTION TO CONNECTION TO CONNECTION TO PERFORMED

0

0

1

Y+

Y-

X+

Y position

0

1

1

Y+

X-

X+

Z1 position

1

0

0

Y+

X-

Y-

Z2 position

1

0

1

X+

X-

Y+

X position

DRIVER ON

Y+, Y-

Y+, X-

Y+, X-

X+, X-

10 ______________________________________________________________________________________

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